Cheating, or modding involves the player manipulating files, or editing the game's data. Here are some ways players can mod Tornado Outbreak.
Using Cheat Engine and Dolphin Emulator Edit
Players can search for a value, and change the value to increase the tornado size, the amount of Fire Flyers grabbed, etc. Players also can swap animations by searching for an animation, then replacing it with the desired animation, or opening the main.dol file into a hex editor and replacing the animation themselves.
Using Gecko OS on an Nintendo Wii Edit
Gecko OS is an application to allow the running of Import games and cheat codes. Using Gecko OS can allow players to select cheats, or even create cheats themselves.